*Smallest planet in our solar system
*Mercury can change temp. from really hot to really cold
*Mercury moves from very close to far away from the sun in its orbit
*There are traces of hydrogen and helium in the atmosphere
Uranus.
Average distance from the sun: 9.58
Time for one rotation (day): 10.7 hours.
Time for 1 revolution (year): 83.7 years.
Diameter (Km): 51,118 km.
The Facts!
*It ws the first to be discovered by the use of a modern telescope.
*3rd largest in our solar system
*It absords the light from the sun which gives it the blue-green color.
*Uranus is 2.5 times farther from the sun than saturn.
Comets.
Comets are rocks that burn up as they hit the atmosphere
They spin around the sun and then get flung back outwards
A comet's orbit around the sun are long narrow ellipses
They have names like Halley's comet.
Comets are often called dirty snowballs.
Black Hole.
It's gravity is so srtong that not even light can escape.
A black hole is a region of the universe so dense it traps stuff in there forever!
Black holes are made when a star collapses in on it's self
Artist idea of a black hole with gas and dust swirling rapidly around it.
Space time could bend around objects,so a black hole which is much more massive would make a hole in space time.
Mercury.
The Facts!
*Smallest planet in our solar system*Mercury can change temp. from really hot to really cold
*Mercury moves from very close to far away from the sun in its orbit
*There are traces of hydrogen and helium in the atmosphere
Uranus.
The Facts!
*It ws the first to be discovered by the use of a modern telescope.*3rd largest in our solar system
*It absords the light from the sun which gives it the blue-green color.
*Uranus is 2.5 times farther from the sun than saturn.
Comets.
Black Hole.